CVE-2026-57062 | CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG… | CVSS 2.9 LOW

Description

CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS format for AES-GCM because aes-ICVlen is supposed to be 12 bytes but 4 bytes is accepted. NOTE: this is related to CVE-2026-34182.

Metadata

CVE ID: CVE-2026-57062
State: PUBLISHED
Assigner: mitre
Reserved: 2026-06-23 17:26 UTC
Published: 2026-06-23 17:26 UTC
Last updated: 2026-06-23 17:35 UTC
Primary CWE: CWE-1284
CWE-1284 Improper Validation of Specified Quantity in Input
Vendor / Product: GnuPG / GnuPG
Sources: cve.org · NVD

Severity & Metrics

2.9 LOW CVSS 3.1

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
GnuPG	GnuPG	—	0 ≤ 2.5.20

Weakness (CWE)

CWE	Source	Description
CWE-1284	cna	CWE-1284 Improper Validation of Specified Quantity in Input

CVSS scores (1)

Score	Severity	Version	Source	Vector
2.9	LOW	3.1	cna	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References (2)